Pkg.clone("https://github.com/ylxdzsw/TOTP.jl")using TOTP
# generate a random key (note this method use Julia's built-in random number generator, which is not crypto safe)
key = gensecret()
# share it to your user by a QR code
uri = genuri(key, "user@domain")
# make qr code of the uri
# generate an otp
genotp(key)
# generate 6 otps near now so you can match any one of them.
if user_input in genotp6(key)
# authentication passed
end